cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A349108 a(n) is the permanent of the n X n matrix A(n) that is defined as A[i,j,n] = (n mod 2) + abs((n + 1)/2 - i) + abs((n + 1)/2 - j).

Table of values

n a(n)
0 1
1 1
2 2
3 66
4 292
5 41100
6 314736
7 108446352
8 1267665984
9 829171609920
10 13696865136000
11 14718069991152000
12 325942368613966080
13 524455030610743115520
14 14983681934750599526400
15 33855616071967479729408000
16 1211736134642288777186918400
17 3668200144503587527675580006400

List of values

[1, 1, 2, 66, 292, 41100, 314736, 108446352, 1267665984, 829171609920, 13696865136000, 14718069991152000, 325942368613966080, 524455030610743115520, 14983681934750599526400, 33855616071967479729408000, 1211736134642288777186918400, 3668200144503587527675580006400]